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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Effect of Diet on Lipoprotein Levels (mg/dL)

cis Fatty Acids trans Fatty Acids Saturated Fats Optimal Level
LDL 103 117 121 < 100
HDL 55 48 55 > 40
LDL-to-HDL ratio 1.87 2.43 2.2 < 2

Rank the three diets from best to worst according to their potential effect on cardiovascular health.

Summary Introduction

To review:

The ranking of three diets from best to worst according to their potential effect on cardiovascular health. The results of the study are shown in the table given below:

Effect of Diet on Lipoprotein levels (mg/dL or milligram per deciliter)
cis Fatty acids Trans Fatty acids Saturated Fats Optimal level
LDL 103 117 121 <100
HDL 55 48 55 >40
LDL-to-HDL ratio 1.87 2.43 2.2 <2

Introduction:

Lipoproteins are referred to as the proteins that are covalently linked to the lipid groups. They are mostly found in the group of biomolecular complexes that are present in the blood plasma of mammals (humans). Plasma lipoproteins help in the transportation of different lipid molecules from one organ to another through the bloodstream. The lipid component of lipoproteins is insoluble in water due to the presence of amphipathic properties. These surrounding protein molecules and other phospholipid molecules make the lipoprotein water-soluble and thus, help in their transportation into the blood or lymph.

Explanation

The different types of lipoproteins are Ultra Low-Density Lipoproteins (ULDL), Very Low-Density Lipoproteins (VLDL), Low-Density Lipoproteins (LDL), Intermediate Density Lipoproteins (IDL), as well as High-Density Lipoproteins (HDL). The LDL is called bad cholesterol as it takes up extra cholesterol to arteries where its deposition occurs and hence can lead to atherosclerosis and heart attack. The HDL is considered as good cholesterol as it aids in expelling excess cholesterol through the liver. Clinically, the ratio of LDL to HDL level is extremely important.

A lipid containing diet is considered as good if its LDL to HDL ratio is low, that is, the level of HDL is more than that of LDL...

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